Qingfeng Mental Hospital.

There is an eerie tranquility here, and occasionally a few creepy screams can be heard from a corner.

Zheng Yiqiu and Brother Long appeared in a room in Qingfeng Mental Hospital.

In front of them, there was a man sitting on the bed. This man was in his thirties. He was Xu Feifan, a doctor of chemistry, who Kuangqiu said was a master of making poisons.

Xu Feifan is a very smart person at first glance. He is extremely smart. There is not a single hair on his head, and it is so bright that it reflects the electric lights on the ceiling.

His expression was dull, as if a fly flew past his eyes without blinking.

He was very quiet, with his eyes half-closed, as if he was about to fall asleep at any moment.

Brother Long stared at him with his sharp eagle eyes, which would make any ordinary person break into a cold sweat, but Xu Feifan didn't react at all.

Brother Long got straight to the point: "Xu Feifan, Fang Gou bought you a poison similar to pufferfish poison. Did you make this poison, or did someone behind the scenes instruct you to make it?"

He asked twice in a row, but Xu Feifan remained silent, as if he was deaf.

Brother Long sighed, somewhat at a loss.

"Master Zheng, how do you think this should be handled?"

He couldn't torture Xu Feifan in a mental hospital. There were surveillance cameras in the room.

Besides, Xu Feifan's mental condition is so serious that even if Brother Long takes action, he may not be able to get the real answer.

Zheng Yiqiu frowned slightly.

"I still have the last mantra pill here. Once I use it up, it will be gone.

I hope we can really ask for information about the Poison King this time, otherwise, our clues will be interrupted here."

Zheng Yiqiu took out a black ball the size of a soybean, pinched Xu Feifan's cheek, and forced him to swallow it.

After swallowing the medicine, Xu Feifan seemed to come to life, and his dull eyes regained some vitality.

Zheng Yiqiu stared at Xu Feifan and asked: "Fang Gou came to you to buy the poison similar to pufferfish poison. Did you make it yourself, or did someone teach you to make it?"

Xu Feifan moved his mouth and spoke like a puppet on strings.

"I don't know who Fang Gou is.

The poison like puffer fish poison you mentioned was made by me.

I have only made one bottle, and that bottle disappeared when it was stolen from my house.

I got the recipe for making this poison online. The raw materials are extremely complex and rare, and the production method is very old. I worked hard for a long time before I succeeded.

However, I thought there was something wrong with the poison, which caused me to be in a trance. I bit people I saw on the road and was sent to a mental hospital.

After entering the mental hospital, I still had attacks from time to time. Even inhaling the volatile gas of this poison can poison people. It is simply too strong!"

When it comes to his passion for drug making, even in this state, Xu Feifan becomes full of energy.

Brother Long clarified the ins and outs of the matter and said thoughtfully: "Fang Gou has unclean hands and feet and has been stealing all year round.

He should have been guarding Xu Feifan's house for a while, knowing that Xu Feifan's house contained such poison, and when he broke into Xu Feifan's house, he also stole the poison.

Kuangqiu said that Fang Gou and Xu Feifan were friends, I'm afraid it was just Fang Gou saying casually."

Zheng Yiqiu nodded.

“Things are finally coming to light.

But, what’s going on with this recipe I got online?”

She looked at Xu Feifan and said, "What happened to the prescription you got online? Tell me what happened."

Xu Feifan said everything in detail.

“My favorite website is about pharmaceuticals, answering questions about chemical pharmaceuticals, and I accidentally saw an interesting post.

The post said that his mother was doing sanitation in the mansion, and when he went to find her mother, he found a chemical pharmacy in the basement of the mansion, with many bottles and cans in it.

He found a recipe for making poison, which was similar to the recipe for pufferfish poison. He thought it was interesting, so he took a photo and uploaded it to the forum.

When I saw this recipe, I was very excited.

This poison is called delusion poison.

Preparing poison with ancient methods is something that some alchemists would do in ancient times, which I think is very cool.

I followed this recipe, bought all kinds of weird herbs online, and finally made a bottle of poison.

I conducted experiments on mice and found that the symptoms of this poison are similar to those of pufferfish poison, but the poison is more complicated and difficult to detoxify."

Zheng Yiqiu and Brother Long looked at each other, with surprise in their eyes.

More and more clues!

However, this matter was a mess from beginning to end.

This recipe for making poison was obtained by Xu Feifan by chance, and was taken away by Fang Gou when he robbed his house.

When Kuangqiu went to find Fang Gou, she learned that he had such a poison, so she encouraged Fang Gou to poison Brother Long and the others.

The ancient method of making poison is the style of Poison King!

If it weren't for so many coincidences, Zheng Yiqiu wouldn't have been able to find the Poison King who could cure the poison in her body.

Zheng Yiqiu said to Brother Long: "Be sure to find this post and follow the clues to find the mansion. Maybe that is the home of the Poison King."

Brother Long nodded, found Xu Feifan's mobile phone, and asked Xu Feifan to open the phone, and under his instructions, go to the website to find posts.

Brother Long frowned and said to Zheng Yiqiu: "This post does not exist and has been deleted."

Zheng Yiqiu frowned and looked at Xu Feifan.

"Things are more complicated than imagined. Xu Feifan is suffering from mental illness. It may not be as simple as inhaling that kind of poison."

Brother Long raised his eyebrows.

"You mean the Poison King discovered something was wrong, asked someone to delete the post, and made Xu Feifan insane?"

Zheng Yiqiu nodded.

"It's not impossible, it's said that the Poison King has his own dark forces.

If the poster broke into the drug manufacturing room, there may not be surveillance methods there."

Brother Long narrowed his eyes.

"Then you have to ask Xu Feifan if he has left any other traces of this post."

After some inquiries and operations by Brother Long, I got an unexpected surprise.

There is a long screenshot in the hidden photo album of Xu Feifan's mobile phone.

In order to save the recipe, he made a long screenshot. The screenshot was the post, with the account number and information of the person who posted it.

The first message on this post was left by Xu Feifan, saying that he wanted to make this poison and then feedback it to the forum.

After finding the clues, Brother Long found a subordinate who knew about human flesh search and asked him to figure out the matter as soon as possible.

In less than three minutes, Brother Long received the feedback results from his subordinates.

"Master Zheng, the investigation is complete.

The person who posted the post is a high school student. This person has disappeared for almost half a year, not long after the post was posted.

His mother no longer worked in the original mansion and was fired, and she devoted herself to searching for her missing son.

The mansion that the poster mentioned belongs to a man named Bai Muju in Jinlang City.

This man is forty-five years old and the boss of a large foreign trade group.

This group has gone public, and Bai Muju has substantial financial resources.

Bai Muju had a rather strange experience. When he was ten years old, he disappeared during a school spring outing and mountain climbing. Five years later, he reappeared and returned to his home.

However, he had no memory of what happened during his disappearance.

This matter was reported in the news.”

Zheng Yiqiu raised her eyebrows.

"Did you mention what the name of that mountain is?"

Brother Long flipped through the information and said, "It's Sencheng, an unknown mountain there."

Zheng Yiqiu came to a conclusion.

"There is something wrong with this Bai Muju.

According to legend, Yuhua Valley, a reclusive Guwu clan, is located in a certain mountain in Sencheng.

The Poison King comes from Yuhua Valley.

In the five years since Bai Muju disappeared, he might have been learning how to make poison in Yuhua Valley.

As expected, this Bai Muju is the Poison King."

Brother Long's face looked a little happy.
To be continued...